Patent US3438737A successfully refreshed from Google Patents.
US3438737A
Expired / Lapsed
US
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Protein test composition,device and method
Assignee: Bayer Corp
•
Filing: 1966-05-05
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Granted: 1969-04-15
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Expires: 1986-05-05
Abstract
No abstract record available.
Inventors
- 👤 Roger Lee Atkinson
- 👤 Marshall Lloyd Fader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:14
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/68; G01N33/6803; G01N33/6827; G01N33/6839
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB814223A
Cited
GB799626A
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US3063812A
Cited
US2897058A
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GB840362A
Cited
US3008879A
Cited
US3146070A
Cited
US3122420A
Cited
GB997603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |